光子

The unbiased estimation expression of photon limited short exposure image cross spectrum was deduced from another point of view.

从另一个角度推导了有限光子数情况下的交叉谱无偏估计表达式，研究了有偏项对振幅谱和相位谱的影响。

The TPA spectra of a series of new organic compounds have been measured.

测试了一组新有机化合物的双光子吸收谱。

I used the homemade ECDL to measure the 2S-3D two photon transition spectrum of Helium , the advantages are that the expense of homemade ECDL is cheap and have good output power. At the same time, I used the electronic part can be got in the market to manufacture a pulse generator in the experiment, the pulse generator can control the output frequency, the pulse width, the relative phase and also can simultaneously control four sets of systems or instruments need the TTL pulse control. The advantage is that the cost of the pulse generator is cheap and the pulse generator is stable. To isolate the magnetic field I used the magnetic foil to helium cell. I also built a gas discharge system, the switch sequence of this system can be controlled by the pulse generator. Finally I built a detecting system can measure the helium energy state. It is cheap and can be combined with the comb laser system in my laboratory.

本实验是利用一台自制的外腔雷射系统来量测2S-3D的氦原子双光子跃迁，其优点在於自制的外腔雷射之费用非常便宜，也有不错的输出功率，同时在实验中我利用市售的电子零件制作了一台脉冲产生器，可控制输出的频率、脉冲宽度以及相对的相位，且可同时控制四套需要TTL脉冲控制的系统或仪器，优点除了便宜之外，也非常稳定；为了隔绝磁场，利用了磁场隔绝金属箔，我也在实验室中建立了一组气体放电系统，其系统可以用脉冲产生器来控制开关时序，最后，我建造了一个氦原子能阶的量测系统，而且费用低廉，可与本实验室的另外一门研究光梳雷射系统做结合。

I used the homemade ECDL to measure the 2S-3D two photon transition spectrum of Helium , the advantages are that the expense of homemade ECDL is cheap and have good output power. At the same time, I used the electronic part can be got in the market to manufacture a pulse generator in the experiment, the pulse generator can control the output frequency, the pulse width, the relative phase and also can simultaneously control four sets of systems or instruments need the TTL pulse control. The advantage is that the cost of the pulse generator is cheap and the pulse generator is stable. To isolate the magnetic field I used the magnetic foil to helium cell. I also built a gas discharge system, the switch sequence of this system can be controlled by the pulse generator. Finally I built a detecting system can measure the helium energy state.

本实验是利用一台自制的外腔雷射系统来量测2S-3D的氦原子双光子跃迁，其优点在於自制的外腔雷射之费用非常便宜，也有不错的输出功率，同时在实验中我利用市售的电子零件制作了一台脉冲产生器，可控制输出的频率、脉冲宽度以及相对的相位，且可同时控制四套需要TTL脉冲控制的系统或仪器，优点除了便宜之外，也非常稳定；为了隔绝磁场，利用了磁场隔绝金属箔，我也在实验室中建立了一组气体放电系统，其系统可以用脉冲产生器来控制开关时序，最后，我建造了一个氦原子能阶的量测系统，而且费用低廉，可与本实验室的另外一门研究光梳雷射系统做结合。

In the next phase of ascension beyond this, one moves from regeneration to self-sustenance in which the biology learns to manufacture all nutrients necessary to repair each and ever part of the form; furthermore the body learns to energize itself not from sugar but rather from photon particles.

超越水晶，在提升的下一阶段中，你会从再生进入自我维生，在其中生物体学习制造所有必需的营养来不断地修复形体的每一部分；而且，身体将学会自我充能，不是从糖类而是从光子。

Based on the high speed of solution of Helmholtz equation, a scheme is designed to self-consistently determine the oscillating frequencies of modes, at which propagation constants meet phase condition.

由于Helmholtz方程的求解速度很快，提出了一种方法，实现了自洽地决定光子谐振频率，在这些频率下相应的Helmholtz方程的传播常数都能满足相位谐振条件。

We calculated resonance spectrum and resonance mode profiles of the DQPC twin and triple-cavity by 3D finite-difference time-domain method.

利用三维有限时域差分法我们可以计算准光子晶体二重以及三重共振腔中的共振场图和模态图。

Results indicate that the waves with certain frequencies in the waveguide can be downloaded into the cavity when resonance coupling occur and different frequencies are downloaded to cavities with different structures.

而具有特定本征共振频率的光子晶体微腔可将在其附近波导中传播的相应频率成份的光下载到微腔中，不同结构的腔可以&下载&不同频率成份的波。

One- dimensional photonic crystal omnidirectional reflector is a perfect mirror without the limits of metal mirror and multi- layer dielectric mirror.

在总结金属反射镜及多层介质反射镜的优缺点的基础上研究一维光子晶体全角度反射器件。

The transmission properties of the 1-D Fibonacci sequence photonic crystals made up of dispersive SiO2 and TiO2 thin films in visible region are investigated by an eigen matrix method,and the results are compared with that without dispersion conditions.

用特征矩阵法研究了由正常色散SiO2/TiO2薄膜组成的Fibonacci序列一维光子晶体在可见光波段的传输特性，并与无色散时的传输特性做了对比。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。